diff --git a/tests/gnrc_netif/Makefile b/tests/gnrc_netif/Makefile
index 755ff23c14b845ff84a2da5a9acf78b47dfac8f5..8485d658db0fe980cb530d01e15d97376a8b26b9 100644
--- a/tests/gnrc_netif/Makefile
+++ b/tests/gnrc_netif/Makefile
@@ -4,7 +4,7 @@ BOARD_INSUFFICIENT_MEMORY := airfy-beacon arduino-duemilanove arduino-mega2560 \
                              arduino-uno b-l072z-lrwan1 blackpill bluepill calliope-mini \
                              cc2650-launchpad cc2650stk chronos hifive1 \
                              maple-mini mega-xplained microbit \
-                             msb-430 msb-430h nrf51dongle nrf6310 \
+                             msb-430 msb-430h nrf51dk nrf51dongle nrf6310 \
                              nucleo-f030r8 nucleo-f070rb nucleo-f072rb \
                              nucleo-f103rb nucleo-f302r8 nucleo-f334r8 \
                              nucleo-l053r8 nucleo-l073rz nucleo-f031k6 \
diff --git a/tests/gnrc_tcp_client/Makefile b/tests/gnrc_tcp_client/Makefile
index 70427a045b6f737792a575ea751378f32de90be1..c24ca1e671fe557adabfae6ca772dbd1ce0275f8 100644
--- a/tests/gnrc_tcp_client/Makefile
+++ b/tests/gnrc_tcp_client/Makefile
@@ -11,7 +11,7 @@ TCP_TEST_CYCLES ?= 3
 # Mark Boards with insufficient memory
 BOARD_INSUFFICIENT_MEMORY := airfy-beacon arduino-duemilanove arduino-mega2560 \
                              arduino-uno calliope-mini chronos hifive1 mega-xplained microbit \
-                             msb-430 msb-430h nrf51dongle nrf6310 nucleo-f031k6 \
+                             msb-430 msb-430h nrf51dk nrf51dongle nrf6310 nucleo-f031k6 \
                              nucleo-f042k6 nucleo-f303k8 nucleo-l031k6 nucleo-f030r8 \
                              nucleo-f070rb nucleo-f072rb nucleo-f302r8 nucleo-f334r8 nucleo-l053r8 \
                              sb-430 sb-430h stm32f0discovery telosb \
diff --git a/tests/gnrc_tcp_server/Makefile b/tests/gnrc_tcp_server/Makefile
index fcbeb7ebcff941dfe8b463c7767a14c4c81eac32..989c9682d91b34f6c3b592c5966c725ec8da8624 100644
--- a/tests/gnrc_tcp_server/Makefile
+++ b/tests/gnrc_tcp_server/Makefile
@@ -11,7 +11,7 @@ TCP_TEST_CYCLES ?= 3
 # Mark Boards with insufficient memory
 BOARD_INSUFFICIENT_MEMORY := airfy-beacon arduino-duemilanove arduino-mega2560 \
                              arduino-uno calliope-mini chronos hifive1 mega-xplained \
-                             microbit msb-430 msb-430h nrf51dongle nrf6310 nucleo-f031k6 \
+                             microbit msb-430 msb-430h nrf51dk nrf51dongle nrf6310 nucleo-f031k6 \
                              nucleo-f042k6 nucleo-f303k8 nucleo-l031k6 nucleo-f030r8 \
                              nucleo-f070rb nucleo-f072rb nucleo-f302r8 nucleo-f334r8 nucleo-l053r8 \
                              sb-430 sb-430h stm32f0discovery telosb \
diff --git a/tests/netstats_l2/Makefile b/tests/netstats_l2/Makefile
index 52598f35bdb43698f0e9cc61ef929051f5b3f4da..0e02f6b2cb16fc73912b1227c808e2d06511fbb6 100644
--- a/tests/netstats_l2/Makefile
+++ b/tests/netstats_l2/Makefile
@@ -1,6 +1,6 @@
 include ../Makefile.tests_common
 
-BOARD_PROVIDES_NETIF := airfy-beacon fox iotlab-m3 mulle native nrf51dongle \
+BOARD_PROVIDES_NETIF := airfy-beacon fox iotlab-m3 mulle native nrf51dk nrf51dongle \
 	nrf6310 pba-d-01-kw2x samd21-xpro saml21-xpro samr21-xpro spark-core \
 	yunjia-nrf51822 \
     esp32-mh-et-live-minikit esp32-olimex-evb \
diff --git a/tests/unittests/Makefile b/tests/unittests/Makefile
index 771609c359182ca5bb0ae3f4419ba75d84f7ea0e..6c6ff4d4efe142e0d6dcc3b926efe674ac0353c9 100644
--- a/tests/unittests/Makefile
+++ b/tests/unittests/Makefile
@@ -30,6 +30,7 @@ BOARD_INSUFFICIENT_MEMORY := airfy-beacon \
                              msb-430 \
                              msb-430h \
                              msba2 \
+                             nrf51dk \
                              nrf51dongle \
                              nrf6310 \
                              nucleo-f031k6 \
@@ -125,6 +126,7 @@ ARM_CORTEX_M_BOARDS := airfy-beacon \
                        microbit \
                        msbiot \
                        mulle \
+                       nrf51dk \
                        nrf51dongle \
                        nrf52840dk \
                        nrf52dk \